What is the minimum width of footings used for a one-story structure built on clay sand soil?

The minimum width of footings for a one-story structure built on clay sand soil is 12 inches. This specification is based on structural engineering principles which account for the load-bearing capability of different soil types, as well as the safety and stability of the building.

Clay sand soil can have varying bearing capacities, and wider footings help distribute the load more evenly across the soil. A footing that is 12 inches wide is generally sufficient for providing adequate support to a one-story structure while minimizing settlement and structural failure due to soil movement or changes in moisture content.

In addition, building codes typically set minimum standards to ensure safety and performance, which also influence the dimensions of footings in different soil conditions. Therefore, a footing width of 12 inches is considered a prudent dimension that appropriately supports one-story structures under typical loading scenarios.